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  • Nature Publishing Group  (6)
  • American Institute of Physics (AIP)  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Tetrahedral amorphous carbon films prepared by magnetron sputtering and dc ion plating (1996)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 79 (1996), S. 1416-1422 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Highly tetrahedral, dense amorphous carbon (ta-C) films have been deposited using rf sputtering of graphite by an unbalanced magnetron with intense dc Ar-ion plating at low temperatures (〈70 °C). The ratio of the argon ion flux to neutral carbon flux Φi/Φn is about 5. The film density and compressive stress are found to pass through a maximum of 2.7 g/cm3 and 16 GPa, respectively, at an ion plating energy of about 100 eV. Experiments with higher ion flux ratios of Φi/Φn=10 show that it is possible to deposit carbon films with densities up to 3.1 g/cm3 and sp3 contents up to 87%. Deposition of ta-C in this experiment when the energetic species is Ar appears to require a minimum stress of 14 GPa to create significant sp3 bonding, which contrasts with the continuous increase in sp3 content with stress when the energetic species is C ions themselves. These results are used to discuss possible deposition mechanisms. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.360979
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  • 2
    Electronic Resource
    Electronic Resource
    Stress-induced formation of high-density amorphous carbon thin films (1997)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 82 (1997), S. 6024-6030 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Amorphous carbon films with high sp3 content were deposited by magnetron sputtering and intense argon ion plating. Above a compressive stress of 13 GPa a strong increase of the density of the carbon films is observed. We explain the increase of density by a stress-induced phase transition of sp2 configured carbon to sp3 configured carbon. Preferential sputtering of the sp2 component in the carbon films plays a minor role compared to the sp2⇒sp3 transition at high compressive stress formed during the deposition process. Transmission electron microscopy shows evidence of graphitic regions in the magnetron sputtered/Ar plated amorphous carbon thin films. Differences in the microstructure of the tetrahedral amorphous carbon (ta–C) films deposited by filtered arc and mass selected ion beam; and those films deposited using magnetron sputtering combined with intense ion plating can be used to explain the different electronic and optical properties of both kinds of ta–C films. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.366469
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  • 3
    Electronic Resource
    Electronic Resource
    Grey's Rock Paintings (1900)
    [s.l.] : Nature Publishing Group
    Nature 61 (1900), S. 248-248 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN Prof. Haddon's review of Mr. Mathews' “Eaglehawk and Crow” there are several references to Grey's rock paintings, amongst which your reviewer remarks, “These rock paintings are certainly very puzzling, and deserve renewed investigation on the spot.” They were investigated by Mr. A. C. ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/061248c0
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  • 4
    Electronic Resource
    Electronic Resource
    Tasmanian Firesticks (1899)
    [s.l.] : Nature Publishing Group
    Nature 59 (1899), S. 606-606 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] WHILE preparing for a second edition of the “Aborigines of Tasmania,” I received from Mr. Jas. Backhouse Walker, of Hobart, two separate accounts of fire-making by the aborigines, which differ materially from those already known. The accounts come from two very old colonists, Mr. Rayner and Mr. ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/059606b0
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  • 5
    Electronic Resource
    Electronic Resource
    Live Frog taken out of a Snake (1898)
    [s.l.] : Nature Publishing Group
    Nature 58 (1898), S. 368-368 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN the spring of 1885, at Divonne-les-Bains, I killed a snake, and on cutting it open I found one frog slightly decomposed and another frog apparently dead; the latter recovered in about a quarter of an hour, and hopped ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/058368a0
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  • 6
    Electronic Resource
    Electronic Resource
    The Origin of the Aborigines of Tasmania. (1909)
    [s.l.] : Nature Publishing Group
    Nature 79 (1909), S. 367-367 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN kindly reviewing my little book on the Discovery and Settlement of Port Mackay, Queensland, in NATURE of September 24, 1908, the reviewer, “J. W. G”., states that Mr. Ling Roth “objects to calling the blackfellows aborigines, as he holds that Australia was first occupied by a negroid people ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/079367a0
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  • 7
    Electronic Resource
    Electronic Resource
    Cave Shelters and the Aborigines of Tasmania (1899)
    [s.l.] : Nature Publishing Group
    Nature 60 (1899), S. 545-545 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] I HAVE just received news from Mr. J. B. Walker, of Hobart, of the discovery of some interesting relics of the aborigines of Tasmania. Mr. Walker accompanied Mr. R. M. Johnston, the Government Geologist, on an expedition in search of some remains of Tasmanians, and the party were rewarded by ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/060545c0
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  • 8
    Electronic Resource
    Electronic Resource
    Use of Sucker-Fishes in Fishing (1889)
    [s.l.] : Nature Publishing Group
    Nature 39 (1889), S. 342-342 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] WITH reference to Mr. Sclater's note in NATURE of January 24 (p.295), on the use of the Romora in fishing, I would like to call attention to the use of sucker-fishes by the aboriginal inhabitants of Cuba. Ferdinand Columbus (“Churchill's Voyages,” 1704, vol. ii. p. 616) says these people used ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/039342b0
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